实验室测定痕量汞过程中空白值的探讨

Discussion on the Blank Value in the Laboratory Determination of Trace Mercury

汞及其化合物属于剧毒物质,可在体内蓄积。汞在人体内达到一定量时,将对人的神经系统、肾、肝脏产生严重的损害。天然水中汞含量极少,一般不超过0.1μg/L。在检验检测工作中,由于各种原因会导致空白值偏高,而空白值偏高常影响测定的准确度,因此研究痕量汞测定过程中影响空白值的因素十分必要。

Mercury and its compounds are highly toxic substances that can accumulate in the body.When mercury reaches a certain amount in the human body,it will cause severe damage to the human nervous system,kidneys,and liver.The mercury content in natural water is very low,generally not exceeding 0.1ug/L.In inspection and inspection work,due to a variety of reasons,the blank value will be high,and the high blank value will affect the accuracy of the measurement.Therefore,it is necessary to study the factors that affect the blank value in the determination of trace mercury.